/*------------------------------------
        written by helio, 2019
  HelloNodeMcu.ino - 串口测试程序
-------------------------------------*/

#include "ESP8266WiFi.h"

void setup()
{
  Serial.begin(115200);
  Serial.print("Hello NodeMCU\n");
  Serial.printf("ChioId:%d\n", ESP.getChipId()); 
  Serial.printf("CpuFreq: %d MHz\n",ESP.getCpuFreqMHz()); 
}

void loop()
{
  Serial.printf("hello,world!"); 
}
